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<title>FatFs - f_mount</title>
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<div class="para">
<h2>f_mount</h2>
<p>The f_mount fucntion registers/unregisters a work area to the FatFs module.</p>
<pre>
FRESULT f_mount (
  BYTE  <em>Drive</em>,              /* Logical drive number */
  FATFS*  <em>FileSystemObject</em>  /* Pointer to the work area */
);
</pre>
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<div class="para">
<h4>Parameters</h4>
<dl class="par">
<dt>Drive</dt>
<dd>Logical drive number (0-9) to register/unregister the work area.</dd>
<dt>FileSystemObject</dt>
<dd>Pointer to the work area (file system object) to be registered.</dd>
</dl>
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<div class="para">
<h4>Return Values</h4>
<dl class="ret">
<dt>FR_OK (0)</dt>
<dd>The function succeeded.</dd>
<dt>FR_INVALID_DRIVE</dt>
<dd>The drive number is invalid.</dd>
</dl>
</div>


<div class="para">
<h4>Description</h4>
<p>The f_mount function registers/unregisters a work area to the FatFs module. The work area must be given to the logical drive with this function prior to any other file function. To unregister a work area, specify a NULL to the <em>FileSystemObject</em>, and then the work area can be discarded.</p>
<p>This function only initializes the given work area and registers its address to the internal table, any access to the disk I/O layer does not occure. The volume mount process is performed on first file access after f_mount or media change.</p>
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<div class="para">
<h4>References</h4>
<p><tt><a href="sfatfs.html">FATFS</a></tt></p>
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